00482naa#a2200169#i#450# EN\\bibl\4142 20240513081738.1 1995-042X 20141202b2014####ek#y0engy0150####ca RUS RU Types of control systems in tourism Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 12 с. Journal article local Tkhagapsov Akhmed rguts.editorum.ru